Tie for coil springs



Aiir'il 21,1925. J. W. RICHARDSON TIE FOR COIL srames Filed Dec. 31,1923 INVENTOR W W ATTORNEY Patented Apr. 21, 1925,

UNITED STATES PATENT QFFEQEE.

JOHN W. RICHARDSON, OF STBATFOED, CONNECTICUT, ASSIGNOR 'iO JOHNCHAIILLON 85 SONS, OF NEW YORK, N. Y. A CORPORATION OF NEW YORK.

TIE FOR COIL SPR-II\TG$.

Application filed December 31, 1923. Serial No. 683,602.

To all whom it vim-y] concern:

Be it known that 1, JOHN W. Rionannson, a citizen of the United States,and resident of Strattord, in the county of Fairiield and State ofConnecticut, have invented certain new and useful ln'iprovements in Tiesfor Coil Spings, of which the following is a specification.

This invention relatesto a coil spring provided with a binding wire toprevent distortion during tempering. Coil springs are used in largequantities for tire pressure gages, scales, valves. etc., and it isnecessary that such springs be of uniform strength and resiliency.- Anobject of this invention is to make a tie for separately and uniformlybinding each side oi he coil, and more specifically with a single wirein such manner as to keep the binding wires on opposite sides of thecoil in their proper spaced relation. a V

Figure 1 of the drawings is a cross section of the wire on a coilspring.

Figure 2 is a section on the line 22 of Figure 1.

The coil spring 10, before being tempered, is bound by'the wire 11preferably of soft iron to prevent distortion of the spring or any ofits convolutions in order to insure uniform strength and resiliency in anumber or the springs. The single wire 11 has two portions or bindingmeans, 12 and 13, e3:- tending along opposite sides of the coil and eachseparately and uniformly binding the spring. As will be seen from Figure1, the binding wire is made in a single piece having its end holdingportions 14 and 15 bent inwardly to lie against the insideot the coil.

The opposite ends of the portions 12 and 13 are similarly bent inwardlyas shown at 16 and 17. The connecting portion 18 maintains'thc parts 12and 13 in their proper spaced relation and prevents the convolutionsgetting out of shape or part 12 or 13 slipping with respect to the otherpart. The wire is of generally W shape. One end o the spring may be bentto form a supporting hook 1.9 as is customary.

Among the advantages of this invention may be included thesimplification of construction whereby a. single wire is used in placeof the two wires in the prior art. A further advantage resides the useof the connecting part 18 for maintaining the portions 12 and 13 onopposite sides of the coil in their proper relation and preventing onesliding out of position with respect to the other in the event Off itsbecoming accidentally loosened. Another advantage is the economy inbinding wire since it talies less material to bind the spring accordingto this invention than under the old way. An other advantage resides inthe avoidance of a number of twists in the wire for under this inventiononly a single bend is made in any portion'of the binding wire.

I claim:

1. The combination with a coil spring, of a binding means on oppositesides thereof. each of said means comprising a longitudinal memberextending over both ends of the coil and projecting into the same, andmeans to preserve the spaced relation of said bindin means.

2. The combination with a coil spring, of a single binding wireextending around the same and having portions thereof inserted into thecoil spring from opposite ends.

3. The combination with a coil spring, of

a single binding wire having portions er:- tending along the 001i indifferent spaced portions thereof and bent over each end oi the coil toretain the spring compr ed.

4-. The combination with a coil sp .g, oi a binding wire having portionsextending along opposite sides of the same and another portion bent overan end 01 the coil and connecting said portions on opposite sides of thespring to prevent the same from slipping oil.

5. The combination with a coil spring, ot a binding wire applied thereonin the eral shape of a. W and having the sides oi said W elongated andbent over.

6. The combination with a coil spring, oi multiple spaced binding meansextending longitudinally of the spring and having end holding portionsbent around each end oi the coil, the bent end holding portions eretending only part way longitudinally of the coil.

Signed at Bridgeport, in the county o't Fairtield and State of Conn,this 22d day of December, A. D. 1923.

JOHN W. nicnannson

